Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796933 | Window sash with frame and operating handle | Per G. Nielsen, Elgard Nielsen | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796933 | Window sash with frame and operating handle | Per G. Nielsen, Elgard Nielsen | 1989-01-10 |